Number Length (mi)[1] Length (km) Southern or western terminus Northern or eastern terminus Formed Removed Notes
US 6 149.00 239.79 Illinois state line at Munster Ohio state line east of Butler 01931-01-011931 current
US 12 45.16 72.68 Illinois state line at Whiting Michigan state line at Michiana Shores 01926-01-011926 current
US 20 155.50 250.25 Illinois state line at Whiting Ohio state line east of Angola 01926-01-011926 current
US 24 164.30 264.42 Illinois state line at Effner Ohio state line northeast of Woodburn 01926-01-011926 current
US 27 117.78 189.55 Ohio state line at West College Corner I–69/US 30 in Fort Wayne 01926-01-011926 current Went into Michigan before 2001
US 30 155.96 250.99 Illinois state line at Dyer Ohio state line southeast of Townley 01926-01-011926 current
US 31 266.02 428.12 Kentucky state line at Clarksville Michigan state line northwest of South Bend 01926-01-011926 current
US 33 94.72 152.44 Ohio state line at Willshire, Ohio US 20 in Elkhart 01937-01-011937 current The route in South Bend was replaced with SR 933
US 35 204.91 329.77 Ohio state line at Richmond US 20 in Michigan City 01934-01-011934 current
US 36 138.99 223.68 Illinois state line west of Dana Ohio state line east of Lynn 01926-01-011926 current
US 40 149.80 241.08 Illinois state line west of Terre Haute Ohio state line at Richmond 01926-01-011926 current
US 41 279.79 450.28 Kentucky state line at Evansville Illinois state line at Whiting 01926-01-011926 current
US 50 171.83 276.53 Illinois state line at Vincennes Ohio state line at Whiting 01926-01-011926 current
US 52 171.03 275.25 Illinois state line at Effner Ohio state line at West Harrison 01926-01-011926 current
US 112 37.8 60.8 US 20 in Rolling Prairie Michigan state line north of Elkhart 01926-01-011926 01936-01-011936 Between 1926 and 1933 the western terminus was in Elkhart
US 131 0.67 1.08 Indiana Toll Road north of Middebury Michigan state line south of White Pigeon, MI 01980-01-011980 current
US 136 75.30 121.18 Illinois state line north of Middebury I–74/I–465 in Speedway 01952-01-011952 current
US 150 177.17 285.13 Illinois state line west of Libertyville Kentucky state line at New Albany 01926-01-011926 current
US 152 Indianapolis Whiting 01934-01-011934 01938-01-011938
US 224 39.63 63.78 US 24 in Huntington Ohio state line east of Decatur 01934-01-011934 current
US 231 285.82 459.98 Kentucky state line at Rockport US 41 in St. John 01952-01-011952 current
US 421 232.00 373.37 Kentucky state line at Madison US 20 in Michigan City 01951-01-011951 current
US 460 align=right align=right|[convert: needs a number] Illinois state line at New Harmony Kentucky state line at Jeffersonville 01947-01-011947 01977-01-011977
  1. ^ "INDOT Roadway Referencing System" (PDF). staff. Retrieved June 22, 2013.